* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html,
body {
	height: 100%;
	width: 100%;
}

#app {
	width: 45rem;
	min-height: 20rem;
	margin: 2rem auto;
	padding: 2rem;
	border: 0.1rem solid black;
	box-shadow: 0.5rem 1rem 1rem 0.5rem gray;
}

h2 {
	height: 3rem;
	line-height: 3rem;
	text-align: center;
	background-color: black;
	color: white;
	font-size: 1.2rem;
}

ul,ol{
	list-style-position: inside;
}

ul li,ol li {
	margin: 1rem 0;
}

pre {
	margin: 0.5rem 0;
	font-size: 0.9rem;
	font-weight: bold;
	font-family: 楷体;
	color: green;
	border-left: 0.05rem solid black;
}

p {
	margin: 1rem 0;
}

@media (min-width:1000px) {
	html {
		font-size: 20px;
	}
}

@media (min-width:500px) and (max-width:1000px) {
	html {
		font-size: 16px;
	}
}

@media (max-width:500px) {
	html {
		font-size: 12px;
	}
}
